/*!
 * 
 * js-audio-recorder - js audio recorder plugin
 * 
 * @version v0.5.7
 * @homepage https://github.com/2fps/recorder
 * @author 2fps <echoweb@126.com> (https://www.zhuyuntao.cn)
 * @license MIT
 *         
 */
!function (t, e) {
    "object" == typeof exports && "object" == typeof module ? module.exports = e() : "function" == typeof define && define.amd ? define([], e) : "object" == typeof exports ? exports.Recorder = e() : t.Recorder = e()
}(this, function () {
    return function (t) {
        var e = {};

        function i(n) {
            if (e[n]) return e[n].exports;
            var r = e[n] = {
                i: n,
                l: !1,
                exports: {}
            };
            return t[n].call(r.exports, r, r.exports, i), r.l = !0, r.exports
        }

        return i.m = t, i.c = e, i.d = function (t, e, n) {
            i.o(t, e) || Object.defineProperty(t, e, {
                enumerable: !0,
                get: n
            })
        }, i.r = function (t) {
            "undefined" != typeof Symbol && Symbol.toStringTag && Object.defineProperty(t, Symbol.toStringTag, {
                value: "Module"
            }), Object.defineProperty(t, "__esModule", {
                value: !0
            })
        }, i.t = function (t, e) {
            if (1 & e && (t = i(t)), 8 & e) return t;
            if (4 & e && "object" == typeof t && t && t.__esModule) return t;
            var n = Object.create(null);
            if (i.r(n), Object.defineProperty(n, "default", {
                enumerable: !0,
                value: t
            }), 2 & e && "string" != typeof t)
                for (var r in t) i.d(n, r, function (e) {
                    return t[e]
                }.bind(null, r));
            return n
        }, i.n = function (t) {
            var e = t && t.__esModule ? function () {
                return t.default
            } : function () {
                return t
            };
            return i.d(e, "a", e), e
        }, i.o = function (t, e) {
            return Object.prototype.hasOwnProperty.call(t, e)
        }, i.p = "", i(i.s = 0)
    }([function (t, e, i) {
        "use strict";
        Object.defineProperty(e, "__esModule", {
            value: !0
        });
        var n = function () {
            function t(e) {
                void 0 === e && (e = {}), this.isplaying = !1, this.lBuffer = [], this.rBuffer = [], this.tempPCM = [], this.inputSampleBits = 16, this.playStamp = 0, this.playTime = 0, this.totalPlayTime = 0, this.offset = 0, this.fileSize = 0;
                var i, n = new (window.AudioContext || window.webkitAudioContext);
                this.inputSampleRate = n.sampleRate, this.config = {
                    sampleBits: ~[8, 16].indexOf(e.sampleBits) ? e.sampleBits : 16,
                    sampleRate: ~[8e3, 11025, 16e3, 22050, 24e3, 44100, 48e3].indexOf(e.sampleRate) ? e.sampleRate : this.inputSampleRate,
                    numChannels: ~[1, 2].indexOf(e.numChannels) ? e.numChannels : 1,
                    compiling: !!e.compiling || !1
                }, this.outputSampleRate = this.config.sampleRate, this.oututSampleBits = this.config.sampleBits, this.littleEdian = (i = new ArrayBuffer(2), new DataView(i).setInt16(0, 256, !0), 256 === new Int16Array(i)[0]), t.initUserMedia()
            }

            return t.prototype.initRecorder = function () {
                var t = this;
                this.context && this.destroy(), this.context = new (window.AudioContext || window.webkitAudioContext), this.analyser = this.context.createAnalyser(), this.analyser.fftSize = 2048;
                var e = this.context.createScriptProcessor || this.context.createJavaScriptNode;
                this.recorder = e.apply(this.context, [4096, this.config.numChannels, this.config.numChannels]), this.recorder.onaudioprocess = function (e) {
                    if (t.isrecording && !t.ispause) {
                        var i, n = e.inputBuffer.getChannelData(0),
                            r = null;
                        if (t.lBuffer.push(new Float32Array(n)), t.size += n.length, 2 === t.config.numChannels && (r = e.inputBuffer.getChannelData(1), t.rBuffer.push(new Float32Array(r)), t.size += r.length), t.config.compiling) {
                            var o = t.transformIntoPCM(n, r);
                            t.tempPCM.push(o), t.fileSize = o.byteLength * t.tempPCM.length
                        } else t.fileSize = Math.floor(t.size / Math.max(t.inputSampleRate / t.outputSampleRate, 1)) * (t.oututSampleBits / 8);
                        i = 100 * Math.max.apply(Math, n), t.duration += 4096 / t.inputSampleRate, t.onprocess && t.onprocess(t.duration), t.onprogress && t.onprogress({
                            duration: t.duration,
                            fileSize: t.fileSize,
                            vol: i,
                            data: t.tempPCM
                        })
                    }
                }
            }, t.prototype.start = function () {
                var t = this;
                if (!this.isrecording) return this.clear(), this.initRecorder(), this.isrecording = !0, navigator.mediaDevices.getUserMedia({
                    audio: !0
                }).then(function (e) {
                    t.audioInput = t.context.createMediaStreamSource(e), t.stream = e
                }).then(function () {
                    t.audioInput.connect(t.analyser), t.analyser.connect(t.recorder), t.recorder.connect(t.context.destination)
                })
            }, t.prototype.pause = function () {
                this.isrecording && !this.ispause && (this.ispause = !0)
            }, t.prototype.resume = function () {
                this.isrecording && this.ispause && (this.ispause = !1)
            }, t.prototype.stop = function () {
                this.isrecording = !1, this.audioInput && this.audioInput.disconnect(), this.recorder.disconnect()
            }, t.prototype.play = function () {
                this.stop(), this.source && this.source.stop(), this.isplaying = !0, this.playTime = 0, this.playAudioData()
            }, t.prototype.getPlayTime = function () {
                var t = 0;
                return (t = this.isplaying ? this.context.currentTime - this.playStamp + this.playTime : this.playTime) >= this.totalPlayTime && (t = this.totalPlayTime), t
            }, t.prototype.pausePlay = function () {
                !this.isrecording && this.isplaying && (this.source && this.source.disconnect(), this.playTime += this.context.currentTime - this.playStamp, this.isplaying = !1)
            }, t.prototype.resumePlay = function () {
                this.isrecording || this.isplaying || 0 === this.playTime || (this.isplaying = !0, this.playAudioData())
            }, t.prototype.stopPlay = function () {
                this.isrecording || (this.playTime = 0, this.isplaying = !1, this.source && this.source.stop())
            }, t.prototype.getWholeData = function () {

                return this.tempPCM
            }, t.prototype.getNextData = function () {
                var t1 = this.tempPCM.length,
                    e1 = this.tempPCM.slice(this.offset)

                if (e1.length) {
                    var e = new ArrayBuffer(e1.length * e1[0].byteLength),
                        i = new DataView(e),
                        n = 0;
                    e1.forEach(function (t) {
                        for (var e = 0, r = t.byteLength; e < r; ++e) i.setInt8(n, t.getInt8(e)), n++
                    }), this.PCM = i, this.tempPCM = []
                }
                if (this.PCM) return this.PCM;
                var r = this.flat();
                r = t.compress(r, this.inputSampleRate, this.outputSampleRate), this.PCM = t.encodePCM(r, this.oututSampleBits, this.littleEdian)
                this.offset = t1
                return new Blob([r])
                // return  e1
            }, t.prototype.playAudioData = function () {
                var e = this;
                this.context.decodeAudioData(this.getWAV().buffer, function (t) {
                    e.source = e.context.createBufferSource(), e.source.buffer = t, e.totalPlayTime = e.source.buffer.duration, e.source.connect(e.analyser), e.analyser.connect(e.context.destination), e.source.start(0, e.playTime), e.playStamp = e.context.currentTime
                }, function (e) {
                    t.throwError(e)
                })
            }, t.prototype.getRecordAnalyseData = function () {
                if (this.ispause) return this.prevDomainData;
                var t = new Uint8Array(this.analyser.frequencyBinCount);
                return this.analyser.getByteTimeDomainData(t), this.prevDomainData = t
            }, t.prototype.getPlayAnalyseData = function () {
                return this.getRecordAnalyseData()
            }, t.prototype.getPCM = function () {
                if (this.tempPCM.length) {
                    var e = new ArrayBuffer(this.tempPCM.length * this.tempPCM[0].byteLength),
                        i = new DataView(e),
                        n = 0;
                    this.tempPCM.forEach(function (t) {
                        for (var e = 0, r = t.byteLength; e < r; ++e) i.setInt8(n, t.getInt8(e)), n++
                    }), this.PCM = i, this.tempPCM = []
                }
                if (this.PCM) return this.PCM;
                var r = this.flat();
                return r = t.compress(r, this.inputSampleRate, this.outputSampleRate), this.PCM = t.encodePCM(r, this.oututSampleBits, this.littleEdian)
            }, t.prototype.getPCMBlob = function () {
                return this.stop(), new Blob([this.getPCM()])
            }, t.prototype.downloadPCM = function (t) {
                void 0 === t && (t = "recorder");
                var e = this.getPCMBlob();
                this.download(e, t, "pcm")
            }, t.prototype.getWAV = function () {
                var e = this.getPCM();
                return t.encodeWAV(e, this.inputSampleRate, this.outputSampleRate, this.config.numChannels, this.oututSampleBits, this.littleEdian)
            }, t.prototype.getWAVBlob = function () {
                return this.stop(), new Blob([this.getWAV()], {
                    type: "audio/wav"
                })
            }, t.prototype.downloadWAV = function (t) {
                void 0 === t && (t = "recorder");
                var e = this.getWAVBlob();
                this.download(e, t, "wav")
            }, t.prototype.transformIntoPCM = function (e, i) {
                var n = new Float32Array(e),
                    r = new Float32Array(i),
                    o = t.compress({
                        left: n,
                        right: r
                    }, this.inputSampleRate, this.outputSampleRate);
                return t.encodePCM(o, this.oututSampleBits, this.littleEdian)
            }, t.prototype.destroy = function () {
                return this.stopStream(), this.closeAudioContext()
            }, t.prototype.stopStream = function () {
                this.stream && this.stream.getTracks && (this.stream.getTracks().forEach(function (t) {
                    return t.stop()
                }), this.stream = null)
            }, t.prototype.closeAudioContext = function () {
                return this.context && this.context.close && "closed" !== this.context.state ? this.context.close() : new Promise(function (t) {
                    t()
                })
            }, t.prototype.download = function (e, i, n) {
                try {
                    var r = document.createElement("a");
                    r.href = window.URL.createObjectURL(e), r.download = i + "." + n, r.click()
                } catch (e) {
                    t.throwError(e)
                }
            }, t.prototype.clear = function () {
                this.lBuffer.length = 0, this.rBuffer.length = 0, this.size = 0, this.fileSize = 0, this.PCM = null, this.audioInput = null, this.duration = 0, this.ispause = !1, this.isplaying = !1, this.playTime = 0, this.totalPlayTime = 0, this.source && (this.source.stop(), this.source = null)
            }, t.prototype.flat = function () {
                var t = null,
                    e = new Float32Array(0);
                1 === this.config.numChannels ? t = new Float32Array(this.size) : (t = new Float32Array(this.size / 2), e = new Float32Array(this.size / 2));
                for (var i = 0, n = 0; n < this.lBuffer.length; n++) t.set(this.lBuffer[n], i), i += this.lBuffer[n].length;
                i = 0;
                for (n = 0; n < this.rBuffer.length; n++) e.set(this.rBuffer[n], i), i += this.rBuffer[n].length;
                return {
                    left: t,
                    right: e
                }
            }, t.playAudio = function (t) {
                var e = document.createElement("audio");
                e.src = window.URL.createObjectURL(t), e.play()
            }, t.compress = function (t, e, i) {
                for (var n = e / i, r = Math.max(n, 1), o = t.left, s = t.right, a = Math.floor((o.length + s.length) / n), u = new Float32Array(a), h = 0, c = 0; h < a;) {
                    var l = Math.floor(c);
                    u[h] = o[l], h++, s.length && (u[h] = s[l], h++), c += r
                }
                return u
            }, t.encodePCM = function (t, e, i) {
                void 0 === i && (i = !0);
                var n = 0,
                    r = t.length * (e / 8),
                    o = new ArrayBuffer(r),
                    s = new DataView(o);
                if (8 === e)
                    for (var a = 0; a < t.length; a++, n++) {
                        var u = (h = Math.max(-1, Math.min(1, t[a]))) < 0 ? 128 * h : 127 * h;
                        u = +u + 128, s.setInt8(n, u)
                    } else
                    for (a = 0; a < t.length; a++, n += 2) {
                        var h = Math.max(-1, Math.min(1, t[a]));
                        s.setInt16(n, h < 0 ? 32768 * h : 32767 * h, i)
                    }
                return s
            }, t.encodeWAV = function (t, e, i, n, o, s) {
                void 0 === s && (s = !0);
                var a = i > e ? e : i,
                    u = o,
                    h = new ArrayBuffer(44 + t.byteLength),
                    c = new DataView(h),
                    l = n,
                    p = 0;
                r(c, p, "RIFF"), p += 4, c.setUint32(p, 36 + t.byteLength, s), r(c, p += 4, "WAVE"), r(c, p += 4, "fmt "), p += 4, c.setUint32(p, 16, s), p += 4, c.setUint16(p, 1, s), p += 2, c.setUint16(p, l, s), p += 2, c.setUint32(p, a, s), p += 4, c.setUint32(p, l * a * (u / 8), s), p += 4, c.setUint16(p, l * (u / 8), s), p += 2, c.setUint16(p, u, s), r(c, p += 2, "data"), p += 4, c.setUint32(p, t.byteLength, s), p += 4;
                for (var f = 0; f < t.byteLength;) c.setUint8(p, t.getUint8(f)), p++, f++;
                return c
            }, t.throwError = function (t) {
                throw new Error(t)
            }, t.initUserMedia = function () {
                void 0 === navigator.mediaDevices && (navigator.mediaDevices = {}), void 0 === navigator.mediaDevices.getUserMedia && (navigator.mediaDevices.getUserMedia = function (t) {
                    var e = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
                    return e ? new Promise(function (i, n) {
                        e.call(navigator, t, i, n)
                    }) : Promise.reject(new Error("浏览器不支持 getUserMedia !"))
                })
            }, t.getPermission = function () {
                return this.initUserMedia(), navigator.mediaDevices.getUserMedia({
                    audio: !0
                }).then(function (t) {
                    t.getTracks().forEach(function (t) {
                        return t.stop()
                    })
                })
            }, t
        }();

        function r(t, e, i) {
            for (var n = 0; n < i.length; n++) t.setUint8(e + n, i.charCodeAt(n))
        }

        e.default = n
    }]).default
});


